When Roswaal announces that their Field Trip will be immediately followed by a Field Day with the “other” class, everyone looks around like he’s crazy. What other class? Sure enough, Subaru peeks into the next classroom (the one that didn’t exist before that day) and spots a whole other class of characters from the four shows.
This includes not only Ainz’s Combat Maids (which Subaru says is “a bit much” even though he’s surrounded by Demon Maids) but a Sword Saint of Subaru and Emilia’s world, Reinhard van Astrea. Hey, if you have all four shows at your disposal, you might as well use everyone you can!
KonoSuba’s Chris is also there, and warns Kazuma and the others from her world that if you die in this weird school world, you won’t come back. Why she specifically has that information is not explained, but there’s no reason to doubt it.
Still, Subaru successfully tests his “Return by Death,” and sound effects I hadn’t heard in a long time suddenly brought everything he went through back. It also makes a “mabeast” like Hamusuke come running, even though she’s not sure why.
The class leaders decide that victory over Class A is absolutely imperative: winning means the possibility of returning to their respective worlds. Everyone in the class rallies together to ensure that victory…except for Kazuma, who would prefer to stay in this world and is too lazy to bother going back to defeat the Demon King.
His stubborn apathy brings out the worst in Tanya, who whips him into shape by going aerial with Puck and putting him through a brutal boot camp. Excited by the crystal bombardment, Megumin decides to join in the fun with an Explosion. Meanwhile, I hope either Class A or another class has Felt, Clementine, Enri, or Kyouya; it would be nice to see those guys again.